A069384 Number of n X 9 binary arrays with a path of adjacent 1's from top row to bottom row.

511, 242461, 105683341, 43843180113, 17792504911231, 7146486319870849, 2856738227918860537, 1139431807812280823353, 454016084146597129480639, 180827014727915133583355805, 72007238386097441302774324845, 28672084199736350940864453233905

Offset

1,1

Links

Sean A. Irvine, Table of n, a(n) for n = 1..200

Crossrefs

Cf. 1 X n A000225, 2 X n A005061, n X 2 A001333, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

Sequence in context: A321548 A160956 A022191 * A069410 A289475 A069436

Adjacent sequences: A069381 A069382 A069383 * A069385 A069386 A069387

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Extensions

More terms from Sean A. Irvine, Apr 30 2024

Status

approved